QuCu84 Bobbin – Laser Welding Wire Silicon Bronze CuSi2 / ERCuSi-A (2.1522) – Ductile, A 45 %

QuCu84 is the ductile silicon bronze: EN ISO 24373 S/G Cu 6511 (CuSi2Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1522. With 1.8 % silicon it is softer than QuCu82 (62 HB) — in return it offers 45 % elongation, the highest figure in quada's entire copper range.That makes it the choice when the seam has to yield: on thin sheet, on low-zinc brasses (CuZn5, CuZn10, CuZn15) and on build-ups that are later formed or heavily loaded. Also suitable for build-ups on unalloyed steel and cast iron.Recommended base materialsCopper and low-alloy copper alloysCuZn5, CuZn10, CuZn15 (brass)Silicon bronzesBuild-up welding on unalloyed and low-alloy steel, cast ironTypical applicationsJoint welding on copper and brassBuild-up welds requiring high formabilityThin sheet and components with stress in the seamBuild-ups on steel and cast ironProperties and advantagesA 45 % elongation — the most ductile copper filler in quada's range62 HB, Re 285 MPa · Rm 530 MPaSofter and tougher than QuCu82 (Si 3 %)Also usable on steel and cast ironRod form advantage: Constant wire feed for manual joint welding.Rod form: Rod lengths 1000 mm and 333 mm, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)Si 1.80 | Mn 1.00 | Sn 0.20 | P 0.01 | Cu balance

QuCu84 is the ductile silicon bronze: EN ISO 24373 S/G Cu 6511 (CuSi2Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1522. With 1.8 % silicon it is softer than QuCu82 (62 HB) — in return it offers 45 % elongation, the highest figure in quada's entire copper range.That makes it the choice when the seam has to yield: on thin sheet, on low-zinc brasses (CuZn5, CuZn10, CuZn15) and on build-ups that are later formed or heavily loaded. Also suitable for build-ups on unalloyed steel and cast iron.Recommended base materialsCopper and low-alloy copper alloysCuZn5, CuZn10, CuZn15 (brass)Silicon bronzesBuild-up welding on unalloyed and low-alloy steel, cast ironTypical applicationsJoint welding on copper and brassBuild-up welds requiring high formabilityThin sheet and components with stress in the seamBuild-ups on steel and cast ironProperties and advantagesA 45 % elongation — the most ductile copper filler in quada's range62 HB, Re 285 MPa · Rm 530 MPaSofter and tougher than QuCu82 (Si 3 %)Also usable on steel and cast ironTIG advantage: For larger seams on copper and brass. Ø 1.6 mm.TIG form: for manual repair welding. Material analysis (wt.-%)Si 1.80 | Mn 1.00 | Sn 0.20 | P 0.01 | Cu balance

QuCu82 is the silicon bronze: EN ISO 24373 S Cu 6560 (CuSi3Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1461. With 3 % silicon it is the stronger of quada's two silicon bronzes (80 HB, Rm 390 MPa).Silicon makes the weld pool more fluid and deoxidising — which is why these wires are the easiest entry into copper welding. They join copper, low-alloy copper alloys, brass (CuZn) and silicon bronzes, and can also be used for build-ups on steel and cast iron. Where more ductility is needed, use QuCu84 (Si 1.8 %, A 45 %).Recommended base materialsCopper and low-alloy copper alloysCopper-zinc alloys (brass)Silicon bronzesBuild-ups on unalloyed and low-alloy steels and cast ironTypical applicationsJoint welding on copper and brassBuild-up welding on steel and cast ironRepairs on silicon bronze componentsArt casting and restorationProperties and advantagesSi 3 % — fluid, deoxidising weld metal80 HB, Re 150 MPa · Rm 390 MPa · A 40 %Stronger than QuCu84 (62 HB)Also usable on steel and cast ironBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)Si 3.0 | Mn 1.00 | Sn 0.10 | Zn 0.10 | Fe 0.07 | Cu balance

QuCu82 is the silicon bronze: EN ISO 24373 S Cu 6560 (CuSi3Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1461. With 3 % silicon it is the stronger of quada's two silicon bronzes (80 HB, Rm 390 MPa).Silicon makes the weld pool more fluid and deoxidising — which is why these wires are the easiest entry into copper welding. They join copper, low-alloy copper alloys, brass (CuZn) and silicon bronzes, and can also be used for build-ups on steel and cast iron. Where more ductility is needed, use QuCu84 (Si 1.8 %, A 45 %).Recommended base materialsCopper and low-alloy copper alloysCopper-zinc alloys (brass)Silicon bronzesBuild-ups on unalloyed and low-alloy steels and cast ironTypical applicationsJoint welding on copper and brassBuild-up welding on steel and cast ironRepairs on silicon bronze componentsArt casting and restorationProperties and advantagesSi 3 % — fluid, deoxidising weld metal80 HB, Re 150 MPa · Rm 390 MPa · A 40 %Stronger than QuCu84 (62 HB)Also usable on steel and cast ironRod form advantage: Constant wire feed for manual repair welding.Rod form: Rod lengths 1000 mm and 333 mm, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)Si 3.0 | Mn 1.00 | Sn 0.10 | Zn 0.10 | Fe 0.07 | Cu balance

QuCu82 is the silicon bronze: EN ISO 24373 S Cu 6560 (CuSi3Mn1) · AWS A5.7 ERCuSi-A · material no. 2.1461. With 3 % silicon it is the stronger of quada's two silicon bronzes (80 HB, Rm 390 MPa).Silicon makes the weld pool more fluid and deoxidising — which is why these wires are the easiest entry into copper welding. They join copper, low-alloy copper alloys, brass (CuZn) and silicon bronzes, and can also be used for build-ups on steel and cast iron. Where more ductility is needed, use QuCu84 (Si 1.8 %, A 45 %).Recommended base materialsCopper and low-alloy copper alloysCopper-zinc alloys (brass)Silicon bronzesBuild-ups on unalloyed and low-alloy steels and cast ironTypical applicationsJoint welding on copper and brassBuild-up welding on steel and cast ironRepairs on silicon bronze componentsArt casting and restorationProperties and advantagesSi 3 % — fluid, deoxidising weld metal80 HB, Re 150 MPa · Rm 390 MPa · A 40 %Stronger than QuCu84 (62 HB)Also usable on steel and cast ironTIG advantage: For larger seams and build-up areas. Ø 1.0–1.6 mm.TIG form: for manual repair welding. Material analysis (wt.-%)Si 3.0 | Mn 1.00 | Sn 0.10 | Zn 0.10 | Fe 0.07 | Cu balance

Qu17-4PH is a precipitation-hardening, corrosion-resistant laser welding wire of the alloy 17-4PH (material 1.4542 / X5CrNiCuNb16-4, AISI 630). This martensitic chromium-nickel-copper steel combines high strength with good corrosion resistance — ideal for repair and build-up welding in tool and mould making as well as on pump, valve and shaft components.Recommended base materials1.4542 — X5CrNiCuNb16-4 / 17-4PH / AISI 630 (primary material)1.4540 — X4CrNiCuNb16-4 (identical-type variant)1.4548 — X5CrNiCuNb17-4 (identical-type variant)Typical applicationsTool and mould making — repair and build-up weldingPump, valve and fitting componentsShafts, axles and highly stressed machine partsOffshore, chemical and food technologyAerospace componentsProperties and advantagesPrecipitation-hardening (Cu/Nb) — high strength through ageing (heat-treatment conditions H900/H1025/H1150)Achievable hardness 37–40 HRC per manufacturer datasheetGood corrosion resistance at high mechanical load capacityIdentical-type weld metal for durable, low-crack jointsShielding gas: argon 4.6 or better; adapt heat control to the aged condition of the componentBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,3 mm – 0,6 mm. Material analysis (wt.-%)Cr 15.0–17.5 | Ni 3.0–5.0 | Cu 3.0–5.0 | Nb 0.15–0.45 | Mn ≤1.0 | Si ≤1.0 | C ≤0.07 | Fe balance

QuFe17 is a wire for joint welding on high-strength, quenched and tempered fine-grain structural steels with a minimum yield strength of 890 MPa: EN ISO 16834-A G/W 89 4 M21 Mn4Ni2CrMo · AWS A5.28 ER110S-G.It has no material number — its analysis is defined solely by the standards. The weld metal reaches Re 880 MPa and Rm 940 MPa at 16 % elongation: it matches the strength of the base material without turning brittle. Where the base material is one class lower (S690QL, 690 MPa), QuFe10NiMo is the wire to use.Recommended base materialsS890Q and comparable high-strength fine-grain steelsXABO 90Weldox 900 EOS 1002, ASTM A709 Gr. 100 Type B, E, F, H, QN-A-TRA 55-70Typical applicationsJoint welds on high-strength quenched and tempered fine-grain steelsRepairs on components from 890 MPa minimum yield strengthCrane and vehicle construction, lifting gear, pressure vesselsRepairs on Weldox and XABO structuresProperties and advantagesRe 880 MPa · Rm 940 MPa · A 16 % — matches the strength of the base materialJoint welding rather than build-up — designed for the seam, not for a wear layerPost-weld treatment as typical for the base materialAlloyed with Ni 2.2 % and Mo 0.5 % for toughness at high strengthBobbin form: K125, K250, K80, MA125, SH253 — wire weight 100 g–500 g, Ø 0,3 mm – 0,8 mm. Material analysis (wt.-%)C 0.10 | Si 0.7 | Mn 1.7 | Mo 0.50 | Cr 0.30 | Ni 2.20 | Fe balance